When the resolution is linked between two data series, data1 and data2, the chart type cannot be independent. So if you switch data1 to a regular chart type, data2 switches to a regular chart type. Now switch data2 to cumulative delta chart type, then data1 chart type then switches to cumulative delta chart type.
So the user cannot have regular chart type for data1 and cumulative delta chart type for data2 while resolution is linked.

Steps to reproduce this issue

Nothing entered.

Create a chart, add an instrument AAPL (data1), add a second instrument AAPL (data2). Set data1 to regular chart type. Set data2 to cumulative delta chart type. Now link the resolution of data1 and data2. Data1 and data2 now have the same chart type. Data1 and data2 cannot have independent chart types while the resolution is linked.

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